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LTC3567EUF-PBF Datasheet(PDF) 5 Page - Linear Technology |
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LTC3567EUF-PBF Datasheet(HTML) 5 Page - Linear Technology |
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5 / 28 page  LTC3567 5 3567f ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VBUS = 5V, VIN1 = VOUT1 = 3.8V, VBAT = 3.8V, DVCC = 3.3V, RPROG = 1k, RCLPROG = 3.01k, unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS tSU_STO Stop Condition Setup Time 0.6 μs tHD_DAT (O) Data Hold Time Output 0 900 ns tHD_DAT (I) Data Hold Time Input 0 ns tSU_DAT Data Setup Time 100 ns tLOW SCL Clock Low Period 1.3 μs tHIGH SCL Clock High Period 0.6 μs tf Clock/Data Fall Time CB = Capacitance of One BUS Line (pF) 20+0.1•CB 300 ns tr Clock/Data Rise Time CB = Capacitance of One BUS Line (pF) 20+0.1•CB 300 ns tSP Input Spike Suppression Pulse Width 50 ns Buck-Boost Regulator VIN1 Input Supply Voltage 2.7 5.5 V VOUTUVLO VOUT UVLO – VOUT Falling VOUT UVLO – VOUT Rising VIN1 Connected to VOUT Through Low Impedance. Switching Regulator is Disabled in UVLO 2.5 2.6 2.8 2.9 V V fOSC Oscillator Frequency l 1.8 2.25 2.7 MHz IVIN1 Input Current PWM Mode, IOUT1 = 0μA Burst Mode ® Operation, IOUT1 = 0μA Shutdown 220 13 0 400 20 1 μA μA μA VOUT1(LOW) Minimum Regulated Output Voltage For Burst Mode Operation or Synchronous PWM Operation 2.65 2.75 V VOUT1(HIGH) Maximum Regulated Output Voltage 5.50 5.60 V ILIMF1 Forward Current Limit (Switch A) PWM Mode l 2 2.5 3 A IPEAK1(BURST) Forward Burst Current Limit (Switch A) Burst Mode Operation l 200 275 350 mA IZERO1(BURST) Reverse Burst Current Limit (Switch D) Burst Mode Operation l –30 0 30 mA IMAX1(BURST) Maximum Deliverable Output Current in Burst Mode Operation 2.7V ≤ VIN1 ≤ 5.5V, 2.75V ≤ VOUT1 ≤ 5.5V (Note 6) 50 mA VFBHIGH1 Maximum Servo Voltage Full Scale (1,1,1,1) l 0.780 0.800 0.820 V VFBLOW1 Minimum Servo Voltage Zero Scale (0,0,0,0) l 0.405 0.425 0.445 V VLSB1 VFB1 Servo Voltage Step Size 25 mV IFB1 FB1 Input Current VFB1 = 0.8V -50 50 nA RDS(ON)P PMOS RDS(ON) Switches A, D 0.22 Ω RDS(ON)N NMOS RDS(ON) Switches B, C 0.17 Ω ILEAK(P) PMOS Switch Leakage Switches A, D –1 1 μA ILEAK(N) NMOS Switch Leakage Switches B, C –1 1 μA RVOUT1 VOUT1 Pull-Down in Shutdown 10 kΩ DBUCK(MAX) Maximum Buck Duty Cycle PWM Mode l 100 % DBOOST(MAX) Maximum Boost Duty Cycle PWM Mode 75 % tSS1 Soft-Start Time 0.5 ms Burst Mode is a registered trademark of Linear Technology Corporation. |
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